Back SearchTitle: EFFECT OF WELD LINES ON THE INJECTION MOULDING OF STRUCTURAL FOAMS. II MECHANICAL PROPERTIES
Page Range: p.63-83
Author(s): Leduc S; Rodrigue D
File size: 226K
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Issue Year: cp
Volume: 25
Issue No: No. 2
Abstract
The effects of weld lines on the mechanical properties of structural high density polyethylene foams produced by injection moulding with azodicarbonamide as foaming agent were investigated under a range of processing conditions by density measurements, shear and tensile testing. The correlation of mechanical properties with skin thickness and bonding at the weld line is discussed in terms of simple mechanical models. 19 refs.
Title: EXPERIMENTAL STUDY ON FILLING STAGE OF MICROCELLULAR INJECTION MOLDING PROCESS
Page Range: p.85-97
Author(s): Behravesh A H; Rajabpour M
File size: 364K
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Issue Year: cp
Volume: 25
Issue No: No. 2
Abstract
The production of high impact polystyrene microcellular foam was investigated using an injection moulding process with an integrated gas injection module and compressed nitrogen gas as blowing agent. The microstructure of the resulting microcellular foam was characterised by SEM, and the effects of shot size on cell formation and growth are discussed in terms of a foaming characteristics diagram. 15 refs.
Title: KEY PROCESSING PARAMETERS FOR MICROCELLULAR MOLDED POLYSTYRENE MATERIAL
Page Range: p.99-108
Author(s): Leicher S; Walter A; Schneebauer M; Wagner M; Kopp T; Wintermantel E
File size: 205K
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Issue Year: cp
Volume: 25
Issue No: No. 2
Abstract
The production of porous polystyrene by microcellular injection moulding using carbon dioxide as blowing agent, and characterisation of the microstructure of the foams by SEM and pycnometry, was investigated. The effects of processing conditions such as injection speed, weight reduction and polymer melt temperature on foam morphology are discussed in terms of potential applications as three-dimensional cell culture substrates. 25 refs.